Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: How to find string and delete before just in line?
Top Forums Shell Programming and Scripting How to find string and delete before just in line? Post 303022230 by baris35 on Tuesday 28th of August 2018 10:43:20 AM
Old 08-28-2018
How to find string and delete before just in line?
Hello,

When my lines contain question mark, I use below command to delete the portion of the matching line coming after question mark:


Code:
sed 's/?.*//' SampleFile

SampleFile:
Code:
helloworldfirstline?mdksmyymsss
hellosecondlineworld?mdksmkkmsss
thirdhelloworld?mdksmccmsss


Output:
Code:
helloworldfirstline
hellosecondlineworld
thirdhelloworld

What if I wish to delete before the question mark in each line?

Expected output1:
Code:
mdksmyymsss
mdksmkkmsss
mdksmccmsss

or ...

Expected output2:
Code:
mdksmyymsss?
mdksmkkmsss?
mdksmccmsss?

With or without question mark, both are welcome.

Many Thanks
Boris
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Delete a Line with a string X

Hi guys, I am new here. I have done many scripts in VisualBasic and batch. Now going to *inux and learning bash and perl, quite amazing commands I find in linux, like sed, grep, awk and so on... the task is simple, find a string in folders and remove the line where that string exists. I can... (3 Replies)
Discussion started by: 4scriptmoni
3 Replies

2. Shell Programming and Scripting

delete a string from line

hi i have a file contains data session terminated Line timeout: 120 Change state START->SIGNON_REPLY, RC=0 Change state SIGNON_REPLY->SIGNON, RC=0 i need to remove "Change state" and write to the same file please help thanks Satya (3 Replies)
Discussion started by: Satyak
3 Replies

3. UNIX for Dummies Questions & Answers

Find Pattern delete line and next line

I am trying to delete the line with pattern and the next line. Found the below command in forum which also deleted the previous line. how should i modify that to make sure that only the line with pattern and the next line are deleted but not the previous line? awk '/key... (1 Reply)
Discussion started by: rdhanek
1 Replies

4. Shell Programming and Scripting

Find specific line and delete line after.

I'm looking for a way to search a file, in this case init.rc for a specific match, service adbd /sbin/adbd, and delete the a specific line after it Original: # adbd is controlled by the persist.service.adb.enable system property service adbd /sbin/adbd disabled After deletion: #... (5 Replies)
Discussion started by: GabrialDestruir
5 Replies

5. Shell Programming and Scripting

Grep a string from input file and delete next three lines including the line contains string in xml

Hi, 1_strings file contains $ cat 1_strings /home/$USER/Src /home/Valid /home/Review$ cat myxml <projected value="some string" path="/home/$USER/Src"> <input 1/> <estimate value/> <somestring/> </projected> <few more lines > <projected value="some string" path="/home/$USER/check">... (4 Replies)
Discussion started by: greet_sed
4 Replies

6. Shell Programming and Scripting

bash: delete a string from last line

I am using a while loop to read a file and i have to delete a string from the last line. Here is the code so far: 1. Read line by line from file new.html using while loop and store in a variable data 2.Now, need to replace '||chr( from last line in data I am able to replace that character from... (12 Replies)
Discussion started by: Chella15
12 Replies

7. Shell Programming and Scripting

Sed find exact string and delete line with variable

All, I am trying to read in a variable and search a file then delete based on that string, but i want to match exact word. This works but it matches all, i don't want to match anthing that contains the string, just the exact string. sed -i "/$feedname/d" file I tried sed... (1 Reply)
Discussion started by: markdjones82
1 Replies

8. Shell Programming and Scripting

Find number in string and delete it AWK

Hi all, i have some logs on my linux server that looks like this: CDR.2012-04-30:30-04-2012 14:09:36;123456456654;A;Greetings! Your amount is 42.24 dollars (without VAT) until 30/04/2012 11:00. CDR.2012-04-30:30-04-2012 14:09:36;12154878454212;A;Greetings! Your amount is 4203.2 dollars... (2 Replies)
Discussion started by: arrals_vl
2 Replies

9. UNIX for Advanced & Expert Users

How to find a string in a line in UNIX file and delete that line and previous 3 lines ?

Hi , i have a file with data as below.This is same file. But actual file contains to many rows. i want to search for a string "Field 039 00" and delete that line and previous 3 lines in that file.. Can some body suggested me how can i do using either sed or awk command ? Field 004... (7 Replies)
Discussion started by: vadlamudy
7 Replies

10. UNIX for Dummies Questions & Answers

Search for a string,delete the line and replace with new string in a file

Hi Everyone, I have a requirement in ksh where i have a set of files in a directory. I need to search each and every file if a particular string is present in the file, delete that line and replace that line with another string expression in the same file. I am very new to unix. Kindly help... (10 Replies)
Discussion started by: Pradhikshan
10 Replies

LEARN ABOUT OPENSOLARIS

diffmk

diffmk(1)							   User Commands							 diffmk(1)

NAME

       diffmk - mark differences between versions of a troff input file

SYNOPSIS

       diffmk oldfile newfile markedfile

DESCRIPTION

       diffmk  compares  two versions of a file and creates a third version that includes "change mark" (.mc) commands for nroff(1) and  troff(1).
       oldfile and newfile are the old and new versions of the file. diffmk generates markedfile, which,  contains  the  text  from  newfile  with
       troff(1) "change mark" requests (.mc) inserted where  newfile differs from  oldfile. When markedfile is formatted, changed or inserted text
       is shown by  | at the right margin of each line. The position of deleted text is shown by a single *.

USAGE

       See largefile(5) for the description of the behavior of diffmk when encountering files greater than or equal to 2 Gbyte ( 2^31 bytes).

EXAMPLES

       Example 1 An example of the diffmk command.

       diffmk can also be used in conjunction with the proper  troff requests to produce program listings with marked changes.	In  the  following
       command line:

	 example% diffmk old.c new.c marked.c ; nroff reqs marked.c | pr

       the file reqs contains the following troff requests:

	 .pl 1
	 .ll 77
	 .nf
	 .eo
	 .nh

       which eliminate page breaks, adjust the line length, set no-fill mode, ignore escape characters, and turn off hyphenation, respectively.

       If the characters  | and * are inappropriate, you might run  markedfile through	sed(1) to globally change them.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWdoc			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       diff(1), nroff(1), sed(1), troff(1), attributes(5), largefile(5)

BUGS

       Aesthetic  considerations  may  dictate	manual	adjustment of some output. File differences involving only formatting requests may produce
       undesirable output, that is, replacing .sp by .sp 2 will produce a "change mark" on the preceding or following line of output.

SunOS 5.11							    14 Sep 1992 							 diffmk(1)
All times are GMT -4. The time now is 08:30 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy